Every copy of mario 64 is personalized.

"Every copy of Super Mario 64 is personalized" is a popular creepypasta that claims each game cartridge has unique, bizarre content due to a supposed experimental "personalization AI" that adapts the game to the player. In reality, this is a myth; the idea originated from urban legends and the fallibility of human memory, which can be susceptible to false recollections of nonexistent events in the game. The meme gained significant traction through online forums and videos, and while it is not real, it has become a well-known piece of gaming folklore.